Questions tagged [routing]
Questions about using a router/networking, e.g. port forwarding, VPNs
190
questions
196
votes
13
answers
402k
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How can I make the Windows VPN route selective traffic (by destination network)?
I want to use a Windows VPN but only for a particular network, so that it doesn't take over my entire network connection.
e.g., Instead of the VPN becoming the default route, make it only the route ...
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96
votes
5
answers
251k
views
OpenVPN: Only route a specific IP addresses through VPN?
On a remote private network there are two servers -- a file server and a database server (these are both Win machines, in case it matters).
The file server has its own fairly robust authentication ...
- 3,281
31
votes
4
answers
46k
views
Route the traffic over specific interface for a process in linux
Is it possible to route the traffic used by a process over a specific interface?
For example, network traffic by download application should always use the interface wlan0 whereas all other ...
- 573
1
vote
1
answer
638
views
How does an internet server respond to a request from a private IP?
I'm learning about private/public IPs, port forwarding and NAT, and still fail to see the answer to a simple question:
Suppose two users on the same network are communicating with a single server ...
- 115
134
votes
14
answers
121k
views
What is the exact use of a MAC address?
I understand that IP addresses are hierarchical, so that routers throughout the internet know which direction to forward a packet. With MAC addresses, there is no hierarchy, and thus packet forwarding ...
80
votes
3
answers
52k
views
How do you get loopback addresses other than 127.0.0.1 to work on OS X
According to everything I read, the entire 127.x.x.x subnet should loopback.
However, on my Mac, I can only ping 127.0.0.1
I know I've done this before (though possibly on another OS) and has come ...
- 903
19
votes
2
answers
23k
views
How does the router know which device to send packets to? [duplicate]
my question does not concern how it moves through the internet, but how it moves through the router to a certain device. All devices connected to a router in a home network have the same external IP. ...
Dan Webster
2
votes
1
answer
3k
views
Connecting to my own network via external IP
Even though I have seen and read quite a few similar Q's I was still unable to understand what is required for me to be able to do this.
I have an internal network. One of the machines is a web ...
- 569
20
votes
4
answers
34k
views
How to set up application-specific routing table on Windows?
Suppose network interface 1 (net1) and 2 (net2) are both connected to the Internet. I want application 1 (app1) to use net1, and application 2 (app2) to use net2. How can it be done under Windows?
If ...
- 5,325
5
votes
1
answer
5k
views
Changing routing on Mac with two Ethernet ports
I have a Mac tower which has two Ethernet ports. One is connected to our corporate network, the other to a non-corporate network. Priority order states that the non-corporate network comes first and ...
- 281
1
vote
1
answer
735
views
Routing between two
I have the following network setup:
From Laptop I can ping any IP in the 192.168.2.0/24 network and I have internet access. On Tower PC I can ping any IP in the 192.168.2.0/24 network (including 192....
- 115
51
votes
8
answers
70k
views
How to force split tunnel routing on Mac to a Cisco VPN
Any one know how to hack the routing table (on a mac) to defeat the forcing of VPN routing for every thing over a cisco VPN? pretty much what I want to do is have only 10.121.* and 10.122.* addresses ...
user23601
25
votes
3
answers
79k
views
How to map an IP adress to localhost?
I want to map the IP address 192.168.1.222 to 127.0.0.1 so that if I use 192.168.1.222 in the web browser or ping command I get the response (and that from my 127.0.0.1).
Is this possible via ...
- 373
14
votes
2
answers
55k
views
Interpreting the 'metric' column in routing table
I'm a little confused about the output I'm seeing in my routing table, particularly the 'metric' column:
$ route -n
Kernel IP routing table
Destination Gateway Genmask Flags ...
- 241
13
votes
2
answers
41k
views
How can I setup a win 7 PC as a router?
I have an industrial PC with 4 Ethernet port, I would like to use this PC as a router on windows 7. Before we used Ubuntu so there is an open source solutiosn, but unfortunately the UPS power supply ...
- 651
11
votes
3
answers
17k
views
DD-WRT: Cannot see client when using wired ethernet
A bit of a frustrating problem I've been facing - I just don't know what's wrong.
I have a Netgear WNR2000v3 router with DD-WRT v24-sp2 (03/19/12) std installed. Everything works perfectly apart from ...
- 111
3
votes
3
answers
10k
views
How to run a web server on my PC without static ip
I have two related questions:
1- When I see my global IP address in a website like https://whatismyipaddress.com/, which is for example X.X.X.X, I think this is not only mine, and a lot of people who ...
32
votes
3
answers
128k
views
"Network is unreachable" when attempting to ping google, but internal addresses work
I can get to other PCs in my house on the 192 network, but trying to go outside gives me the "network is unreachable" message. p3p1 is up with a good IP Address. Running Fedora 16. What should I ...
- 2,394
26
votes
5
answers
85k
views
How to tell Windows 7 to ignore a default gateway
I currently have 2 network cards in my PC -- one connected to an internal network on a router with a disconnected WAN port (10.x.x.x), and one connected to the internet through a consumer router (192....
- 2,337
16
votes
5
answers
91k
views
Rerouting local LAN and Internet traffic when in VPN
I'm connecting to a VPN which doesn't allow split tunneling and basically reroutes my Internet traffic through, which is slow. Additionally and more importantly, this also effectively removes my ...
- 2,789
11
votes
2
answers
21k
views
private address in traceroute results
I SSH into a remote host 194.199.68.165 and then use traceroute to check paths to 132.227.62.122 , and I notice that there are some private IPs, like 10.230.10.1
bash-4.0# traceroute -T 132.227....
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6
votes
1
answer
13k
views
Routing a particular subnet into a VPN tunnel
My network looks like this:
I'm trying configure my router so that the subnet (192.168.2.0/24) is routed over the VPN tunnel (tun0) on the gateway/router.
While at the same time clients on the ...
- 83
5
votes
2
answers
14k
views
OpenVPN: Route only specific subnetwork through vpn - works for single IP adresses
I was trying to route only specific subnet/single through open vpn.
I have read several questions like this on superuser, and even found
good answer to my question.
So I am now able to route single ...
- 278
68
votes
2
answers
122k
views
What is the difference between ARP binding and DHCP address reservation?
In my TL-WR1043ND I have these functionalities and both of them pair an IP address to a MAC address. What is the difference?
I read that ARP is for security reasons, others say it is for Wake-on-LAN. ...
- 5,204
50
votes
2
answers
46k
views
Does All LAN Traffic Travel Through A Router
I have a very simple question: if I have a router (DHCP enabled - leasing IP addresses between 192.168.0.2 and 192.168.0.254) with a switch plugged in, and I plug two computers into the switch, will ...
- 898
39
votes
8
answers
142k
views
Access internal IP using public IP
I have a DSL modem with a public IP address (201.206.x.x), and I have a web server in my internal network (192.168.0.50).
I set up the modem to forward requests to port 80 to my web server, so, if I ...
- 683
30
votes
5
answers
40k
views
How do IP answer packets reach their destination inside of a private LAN? [duplicate]
This is a little theory question that has been confusing me for a pretty long time.
Basically, if we are inside of a private LAN, and we want incoming packets to reach, for example, an HTTP server ...
- 301
21
votes
2
answers
34k
views
Route only specific traffic through VPN
I've looked up previous people asking similar questions, but have yet to get a straight answer that will work for my given situation, so here goes..
I'm running on Linux (Fedora 22) and have a VPN ...
- 419
20
votes
4
answers
32k
views
How do I setup Ubuntu/Linux's Network manager to selectively route network traffic through the VPN?
I'm using Ubuntu 9.04 and I just noticed that ALL of my network traffic is being routed through my VPN. I would like the VPN to route only the traffic hitting servers on the VPN and then connect ...
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14
votes
3
answers
28k
views
Why is tracert showing a private IP address right after my router, even though it has a public IP?
Here is a log of tracert superuser.com from my computer:
Tracing route to superuser.com [198.252.206.16]
over a maximum of 30 hops:
1 2 ms 2 ms 2 ms 192.168.1.1
2 11 ms 17 ms ...
- 8,255
14
votes
2
answers
59k
views
Windows 7: how can I add an IP range in the "route" command?
I'm using two network connections, and I tried using the "route" command so that when I access a specific internal IP on my LAN, it would use connection 1, anything else would go normally through ...
- 373
13
votes
6
answers
67k
views
When a PC has both a wired and a wireless connection, how is information transferred?
My PC has two connections (wireless and wired) simultaneously. Both of them have an internet connection.
In this situation, how does it connect to the internet? How do my LAN and WLAN interfaces know ...
- 233
11
votes
8
answers
24k
views
Why can't routers use MAC addresses instead of private/local IP addresses?
I understand the reason public IP addresses are necessary to be that if we only had MAC to move data between one host and another, the entire Internet would be one massively flat network. But what is ...
- 1,027
11
votes
4
answers
131k
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Why can't my OpenVPN client access machines on same LAN as OpenVPN server?
I have configured OpenVPN on my Linux server and Windows client according to the instructions here. My client can access the server, but can't get any further onto the LAN.
My Server is 10.23.29.64/...
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11
votes
4
answers
37k
views
Routing all Traffic through OpenVPN Tunnel
I have installed OpenVPN server on Archlinux and am now using OpenVPN GUI on Windows 7, I can talk to other computers connected through the VPN but I have not yet figured out how to route all traffic ...
- 611
9
votes
4
answers
33k
views
Static routing on a TP-Link TL-WR1043ND
My home network setup looks like this:
Both routers are TP-Link TL-WR1043ND routers. The basement router handles all devices in the house that are connected via cable, handing out addresses for the ...
- 260
9
votes
1
answer
55k
views
How to forward packets between two interfaces?
My laptop (use's Ubuntu 13.10) is connected to internet using a wired connection at eth0 with ip 192.168.42.13 and it also acts as a wifi hotspot at wlan0 with the ip 192.168.1.1 (i used airbase-ng to ...
- 337
8
votes
3
answers
4k
views
Iptables forwarding port/s to a external IP transparently (remote end should see the actual source IP)
The question is simple but I think the answer might not be as I went through countless related topics with no concrete reply.
I wish to forward a port 1234 from x.x.x.x to y.y.y.y (both on internet ...
- 81
6
votes
2
answers
8k
views
How to use a Windows PC to share multiple network connections?
I have a Windows PC (Win 7). It has a couple different network connections, including one that connects to a VPN, and one that connects to the Internet. I want to share both of those connections with ...
- 161
6
votes
4
answers
1k
views
Is there any alternative to virtualization for handling two different interfaces, different networks and same IP range?
I have a Linux box with two different NICs that are connected to two different networks, but they share the same IP range (10.0.0.x). My first idea was to use virtualization for that (i.e., Xen), but ...
- 61
6
votes
2
answers
25k
views
Problem with persistent routes and VPN connection in Windows 7
My home PC has a VPN connection to my office. The office network is firewalled, with a secure zone on 192.168.0.* and a DMZ on 10.0.0.*
From outside, www.mycompany.com routes to a public IP - say 1....
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5
votes
2
answers
7k
views
How to route traffic to website using a specified network connection on Windows 7?
I want to route all traffic to a website over my wireless connection while the rest of the traffic using my lan. What I tried was first finding out the IP address of the website I want to go to. For ...
- 161
5
votes
2
answers
12k
views
Multiple NICs in linux: how to return route through established?
If there's a linux host with two interfaces on two different networks (the primary network, and the out-of-band management network, call them "primary" and "mgmt"), how can return traffic be routed ...
- 91
5
votes
3
answers
6k
views
hosts file for ip address
I would like to map ip address to specific localhost interfaces (e.g. 23.45.66.77 => 127.0.3.3). For named hosts I can use the hosts file. Naturally this doesn't work for IP address.
This has to work ...
- 151
4
votes
1
answer
6k
views
Default route in debian with two interfaces
I have a debian machine with two interfaces, configured by dhcp:
allow-hotplug eth0
iface eth0 inet dhcp
allow-hotplug eth1
iface eth1 inet dhcp
On boot, a default route is added to eth1:
0.0.0.0 ...
- 1,431
4
votes
3
answers
41k
views
How to make Windows send specific traffic to specific ethernet ports?
In my line of work, I am often in a situation where I want to do this:
Icon made by Freepik used with permission from flaticon.com
Essentially, I have my phone setup as a Wifi hot-spot, in order to ...
- 183
3
votes
2
answers
12k
views
Creating a whitelist of websites on the router
I have a home network using a Siemens SL2-141 ADSL router. Is there a way to tell the router to allow only specific websites, for example, to protect kids using the computers from harmful sites?
I ...
- 1,777
3
votes
3
answers
6k
views
Custom route table for a specific application? [duplicate]
I'm on a network with two internet connections.
One is a WAN access to a corporate network (with custom firewall rules), the second is a direct internet connection.
By default, all communications are ...
- 2,222
2
votes
1
answer
3k
views
Route LAN traffic through eth0, not tun0, on my VPN access point
How can I make my Access Point send traffic to 192.168.1.0 through eth0 and all other traffic through tun0?
I have set up a Raspberry Pi VPN access point. It sits on the same subnet as all my servers,...
2
votes
1
answer
17k
views
How to set route specific interface metrics under Mac OS X
UPDATE: I found a great answer to part of my problem here https://superuser.com/a/525592/169461. I was able to set priority for interface en1 (wifi). However, this is not specific enough, since it ...
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